The gist is, OpenAI hired a high ranking Apple employee who helped other Apple employees get hired by OpenAI and exfiltrate Apple trade secrets in the process.
Given that his departure was marked by Apple products getting more reliable and usable, they arguably did too much in that regard (one of Cook’s more notable bad calls). Once he stopped blocking it, the keyboards were fixed and pro devices regained enough ports for pro users.
Without his support, his protege Alan Dye left for Meta and improved the design skills at both companies.